News items November 2019

Reduction of Downtime The current version of the pneumatic deck lifting system installed in tumbler screening machines, allows screen inserts to be changed one at a time. When used with multi-deck screening machines each deck has to be raised and changed separately. This is time and labour intensive, depending on the number of screen inserts to be changed. In order minimise downtime, GKM Siebtechnik has developed a new pneumatic multi-deck lifting system allowing multiple deck lifting and exchange in a single operation. By means of the pneumatic cylinders, all screening decks can be lifted simultaneously. All screen inserts can be inspected, cleaned or changed at once. This new lifting system allows between two and four decks to be the exchanged and inspected after which the complete screening decks are lowered precisely back to their correct location. This innovative pneumatic multi-deck lifting system can be installed or retrofitted on tumbler or vibrating screening machines with diameters

Polystyrene sheets production In the production of polystyrene sheets the EPS granules (polystyrene granules) are delivered in pressurized containers. The material is then transported into silos with a capacity of 28 tons. The filling and removal takes place via a disc conveyor. So far, the quantity was determined by the level measurement in the silo. Our customer was now looking for an optimized quantity measurement with the latest technology. Process data Customer: Manufacturer of Styrofoam sheets (Germany) Material: EPS granules Quantity: 390 kg/min Installation: Pipe after disc conveyor Function: Exact measurement of flow rate Solution MaxxFlow HTC is a sensor for bulk solids volume measurement. It is used after mechanical conveying elements. The MaxxFlow HTC sensor can be calibrated and transmits the exact measured data to the control system. It can be mounted in free fall sections or in diagonal lines. Short installation space required and easy calibration makes

Efficient pre- and fine grinding in one instrument with impact or cutting rotor The Fritsch variable Speed Rotor Mill Pulverisette 14 premium line offers impact, shearing and cutting comminution in one instrument – with a higher performance, better cooling and significantly quieter than comparable instruments. Its powerful motor is ideal for the particularly fast comminution of soft to medium-hard, brittle as well as fibrous materials and temperature-sensitive samples with an extremely fast sample throughput, which can be further increased by the use of the Fritsch cyclone separators. Overview of the features: - Powerful grinding with 22,000 rpm for particularly fast sample throughput - Max. feed size < 15 mm, sample throughput of up to 15 l/h and more - AutoLOCK grinding chamber for particularly safe work - Final fineness down to d50 < 40 μm, sieve rings 0.08 – 6 mm - Particularly good cooling of the grinding material - Pleasantly quiet operation - Very easy to clean due to Clean Design FRITSCH premium-Plus: Two instruments